3
3/5 x 3 = 9/5
9/5 = 1 4/5
Answer: H
Step-by-step explanation:
Supplementary angles just mean they add up to 180 degrees. 180 degrees means that when the two angles are put together one of each of their sides will form a straight line.
256 is the answer. I know this because 128+128 equals 256.